Palladium catalyst method of resisting CO poisoning
A technology of palladium catalyst and carbon monoxide, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as shortening service life, reduce costs and reduce recycling Frequency, the effect of reducing the possibility of poisoning
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Embodiment 1
[0029] This example illustrates the preparation of the ruthenium / carbon promoter used in the method of the present invention.
[0030] Get 50 grams of powdered activated carbon (product of Shanghai Activated Carbon Co., Ltd., analytically pure, specific surface area 860m 2 / g, moisture content 10%, pH value is 3.5, particle size is 40-60 micron and accounts for 50%, the rest is 60-160 micron), after following pretreatment, as the carrier of ruthenium auxiliary agent:
[0031] (1) The hydrochloric acid aqueous solution of 10% by weight with 500ml concentration of activated carbon is covered and boiled on a water bath for 6 hours, removes soluble impurities, ash and orifice blockages on the surface, rinses with deionized water until the filtrate is neutral, after filtering Dry at 110°C;
[0032] (2) The activated carbon after removing impurities was oxidized with 150ml of 20% by weight nitric acid solution at room temperature for 6 hours, then rinsed with deionized water until ...
Embodiment 2
[0036] This example illustrates the preparation of the ruthenium / carbon promoter used in the method of the present invention.
[0037] Get 50 grams of powdered activated carbon (product of Shanghai Activated Carbon Co., Ltd., analytically pure, specific surface area 860m 2 / g, moisture content 10%, pH value is 3.5, particle size is 40-60 micron and accounts for 50%, the rest is 60-160 micron), after following pretreatment, as the carrier of ruthenium auxiliary agent:
[0038](1) 600ml concentration of activated carbon is that the hydrochloric acid aqueous solution of 15% by weight is covered and boiled on a water bath for 6 hours to remove soluble impurities, ash and orifice blockages on the surface, rinse with deionized water until the filtrate is neutral, and filter Dry at 110°C;
[0039] (2) The activated carbon after the impurity removal is 5% O at a gas flow rate of 50ml / min 2 +95%N 2 In the mixed gas atmosphere, the temperature was raised to 425°C and kept constant fo...
Embodiment 3
[0043] This example illustrates the preparation of the ruthenium / carbon promoter used in the method of the present invention.
[0044] Get 50 grams of powdered activated carbon (product of Shanghai Activated Carbon Co., Ltd., analytically pure, specific surface area 860m 2 / g, moisture content 10%, pH value is 3.5, particle size is 40-60 micron and accounts for 50%, the rest is 60-160 micron), after following pretreatment, as the carrier of ruthenium auxiliary agent:
[0045] (1) gac 150ml concentration is that the hydrochloric acid aqueous solution of 20% by weight adds a cover and cooks on a water bath for 2 hours, removes soluble impurities, ash and orifice blockages on the surface, rinses with deionized water until the filtrate is neutral, after filtering Dry at 110°C;
[0046] (2) The activated carbon after impurity removal was oxidized with 150ml of 20% by weight nitric acid solution at room temperature for 10 hours, then rinsed with deionized water until the filtrate w...
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Abstract
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